Place potatoes in a large pot and add water to cover by at least 1 inch and bring to a boil. Cook until potatoes are just tender and easily pierced with a fork, about 10-15 minutes. Drain, and set aside to cool slightly.
While the potatoes are cooking, prepare the dressing. Whisk together remaining ingredients in a mixing bowl. Add the cooked potatoes. Stir to combine, being careful not to break up the potatoes too much. Serve warm.